`step ssh config` does not respect the `--context` flag when configuring a host.

[dopey]

[clayrosenthal]

+1, also does not respect the context flag when configuring a user

❯ step context select dev
✔ Context: dev

❯ step ssh config --roots --host --context dev
ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdH[...]e9/5pX5r30EEWcg=

❯ step context select test
✔ Context: test

❯ step ssh config --roots --host --context dev
ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAy[...]SLLERKYhxyFYozI=


❯ step context select dev
✔ Context: dev

❯ step ssh config --roots --context test
ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlz[...]SR8hXjW6G9h5+IxQ8hA=

❯ step context select test
✔ Context: test

❯ step ssh config --roots --context test
ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdH[...]UJZA/ofW0H/JAU=